patch 8.2.3521: options completion test fails

Problem:    Options completion test fails.
Solution:   Add 'thesaurusfunc' to the results.
diff --git a/src/version.c b/src/version.c
index 00617b5..16e49ac 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3521,
+/**/
     3520,
 /**/
     3519,